The guidance for i915 at this time is to start phasing out pread/pwrite ioctl's, the rationale being (a) the functionality can be done entirely in userspace with a combination of mmap + memcpy, and (b) no existing user mode clients actually use the pread/pwrite interface. In this patch we disable these ioctls for dGfx platforms with the expectation that this will be done for all future platforms (both discrete and integrated). IGT changes which handle this kernel change have also been submitted [1]. [1] https://patchwork.freedesktop.org/series/81384/ Test-with: 20210121083742.46592-1-ashutosh.dixit@xxxxxxxxx Signed-off-by: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx> Ashutosh Dixit (1): drm/i915: Start disabling pread/pwrite ioctl's for future platforms drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_gem.c | 6 ++++++ drivers/gpu/drm/i915/i915_pci.c | 3 ++- drivers/gpu/drm/i915/intel_device_info.h | 1 + 4 files changed, 10 insertions(+), 1 deletion(-) -- 2.29.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
